| internationalise | |
| international organisation | |
| international standardisation | |
| Internet | |
| interrogative | |
| in the centre | |
| into the centre | |
| inverted commas | |
| ionising radiation | |
| iron-grey | |
| Islamise | |
| island | |
| Israeli New Shekel | |
| Israeli new shekel | |
| Israeli new shekels | |
| Israeli Shekel (1980–1985) | |
| Israeli shekel (1980–1985) | |
| Israeli shekels (1980–1985) | |
| jack-o-lantern | |
| japanese castle | |
| japanese dolls | |
| japanese post office | |
| japanese symbol for beginner | |
| jeans | |
| jemmy | |
| jeweller | |
| jewellery | |
| joke | |
| joker | |
| joystick | |
| judgement | |
| judgment | |
| jumper | |
| kaaba | |
| kelvin | |
| kerb | |
| kerosene | |
| key | |
| keyboard | |
| keycap asterisk | |
| keycap digit eight | |
| keycap digit five | |
| keycap digit four | |
| keycap digit nine | |
| keycap digit one | |
| keycap digit seven | |
| keycap digit six | |
| keycap digit three | |
| keycap digit two | |
| keycap digit zero | |
| British English |